Finding the Fourth Proportional to 21,082.85, 29,100.38 and 13,917.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,082.85 : 29,100.38 = 13,917.99 : x
2. Step 2: Convert to fraction form
   21,082.85/29,100.38 = 13,917.99/x
3. Step 3: Cross multiply
   21,082.85x = 29,100.38 × 13,917.99
4. Step 4: Simplify right side
   21,082.85x = 405,018,728.25
5. Step 5: Solve for x
   x = 405,018,728.25/21,082.85
6. Step 6: Final answer
   x = 19,210.82